Dust-mop.



.f SAMUEL B. MCHENRY, 0F CHICAGO, ILLINOIS.

DUST-M OP.

Specification of Letters Pate.'

' PatentedDec.9, 1913.

Application filed .Tune 22, 1912. Serial No. 705,196.

To all whom it may concern.'

Be it known that I, SAMUEL B. a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Dust- Mops, of which the following is a specification.

This invention relates to dust lnops and is designed to construct a device of this nature wherein the body or mop block will always rest in a constant plane parallel to the surface over which it is operatedirrespec tive of the position of the handle.

Another' object of the present invention is the prov'sion of a mop wherein the mop block is supported abovev the surface over which it is operated by the mop strands irrespective of the relative position of said strands to the mop block.

With the above and other objects in view this invention consists in the construction, combination, and arrangement of parts all as hereinafter more fully described, claimed and illustratedin the accompanying drawingwherein: I

igure 1 is a top plan view of a dust mop forming the subject matter of the present invention, Fig. 2 is a transverse section illustrating in detail the cooperation of the handle with the block and the locking means for the mop strands, a, portion of said strands being eliminated for' the purpose of illustration.

Referring more particularly to the drawing, 10 indicates a circular disk which constitutes the mop block, said disk beingr provided with a central, concentric, conical depression 11 therein. A flexible strap 12 is arranged diaiuctrically across the depres- Sion 11 and is retained in this position by means of the screws 13. A handle 14- is pivotally mounted on this strap 12 adjacent to the lower terminal thereof, the pivotal connection between said handle and said strap beingl such that a portion of the handle projects into the depression 11. It will clearly be seen that as the lnop is pushed or drawn by the handle over a surface, the handle i4 will assume various angles to the plane of the mop block 10 in such a manner that .sz-id mop Llock will be retained in a normally constant plane. In order that thc strap l2 may not be subjected to any unusual strains it will bc understood that the lower terminal of the mop handle 14 which prrlects into MCHENRY, the depression 11 will bear against tne walls of the depression 11 irrespective of the positions of the handle thus causing the strain 'to be applied upon the mop block direct'and not upon the strap 12.

The mop strands which are used in't-he preferred form of construction are voolen yarn strands which are rebent forming a loop, .said loop being retained in a groove 15 formed in the under side and adjacent to the periphery of the mop block 10. This Agroove 15 formed in the under side of the block 10 adjacent to the periphery thereof, said groove extending inwardly into said block at an acute angle to the horizontal plane, the outer side of said groove forming a lip 1G which constitutes the edge of the block and is curved as illustrated, the opposite side 17 thereof being curved to conform with the curve of the lip 16. The body of the blcck18 surrounded by the lip 16 is at a slightly lower elevation than said lip, as is illustrated in Fig. 2, and aids in retaining the welt or bead in the woolcn yarn strands which support the block above lthe surface operated upon, as will hereinafter be more fully described. As is heretofore stated, the woolcn yarn strands 19 are rebent forming a loop 20 which is forced into the groove 15. A continuous wire 21 is attached by one end to the inner surface of the groove, as at 22, then is wound about within the groove three times, said wire extending through the loop Q0 of the strand and has its free end attached to the block, as at 23. From this emistruction it will clearly be understood that tho oblique and angular arrangement of the inner portion 1 8 of the block and the formation of the lip 1G causes the lstrands 1S) to be curved downwardly, as illustrated in Fig. 2, forming a welt. or ridge which contacts with the .surface operated u'pon and supports thc block 10 above said surface. This ridge or weh is retained irrespcctiw of the position of the strands by reason of the formation of the inner side i7 of the groove 15.

While I have illustrated and described the preferred forurof construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. l, therefore do not wish to be limited to the precise details of construction set forth, but

desire to avail'niyself of such variations and modifications as come within the scope of claim as new and desire to Patent is In combination,

the bottom face o secure by Letters a mop head comprising a h"disk having an annular groove opening upon f the head and extending therein from its lower peripheral edge obliquely toward face, the side of the center of the upper` said groove nearer the] periphery of said disk being convex and the other side of said groove belng concave; and mop material secured in said groove, substantially .as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAMUEL B. MCHENRY. 

